Well pearl, I don't know if this is "the big answer" you were looking for, but it's what I came up with...
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Originally Posted by 419 and Holding But actually it's just a matter of preference. Alot of growers run high-wattage lights, so turning them off for 6 hours (1/4 of the day) saves them that much on electricity. Plus it gives the room time to cool off some (as well as bulb and ballast). Since there isn't a need to run the lights 24/7, alot just opt not to.
Myself personally, I do run my lights 24/7 for the whole veg. cycle. Just makes it easier (IMO) without the hassle of timers (and possible malfunctions of said timers) and whatnot. Also, having a dark period takes away from time I can potentially spend with my ladies. 
So, it's not an "argument".....just a matter of preference. |
As for the lighting versus root growth debate, I think we determined (someone correct me if they feel otherwise) that 24/7 was the way to go, but obviously 18/6 would work just fine too. Only minor advantages (constant light= constant photosynthesis = constant glucose creation = constant cellular respiration = constant chemical energy = constant growth!!!)
with having the light on 24 hours a day....